Forecast: Nice weather continues, but watch out for flooding
The stretch of great post-Matthew weather continues as high pressure remains in control over the area. Temperatures will remain comfortable in the mid-to-upper 70s and skies will just have a few clouds at times. Pretty fantastic if I do say so myself. The only fly in the ointment will be possible tidal flooding with the evening high tide thanks to a combination of astronomical influences and continued northeast winds.
Tidal flooding to increase this week
Onshore winds combined with the perigee of the moon will combine for increasingly high tides as the week progresses. As tides begin to exceed 7', coastal flooding will become fairly likely — though it didn’t need to exceed that height to get some salt water on roads today.
Expect coastal flooding around times of high tide Thursday morning through at least Saturday. Extratropical surge guidance (pictured above) suggests tides exceeding 8' in the harbor Friday and then again on Saturday. At that height, we start seeing quite a few salt water issues in downtown Charleston. I’ll keep an eye on this. Fortunately, no rain is in the forecast to make the tidal issues any worse, but there may be some commute troubles at times.
Follow @chswx on Twitter for updates on possible Coastal Flood Advisories around times of high tide.
River flooding concerns continue
River flooding will continue to factor into the #chswx equation for the next several days in some spots. Several flood warnings remain in effect around area rivers.
Ashley River in Dorchester County
Flooding along the Ashley River will continue to play a role in parts of Dorchester County for a few more days, it looks like. Flood Warnings remain in effect along the Ashley River from 17A south to the Dorchester line as well as along and near US 78 at Four Hole Swamp closer to Ridgeville. If you live in these areas, please be aware of rising water and take action to protect life and property in case the waters continue to rise.
Edisto River near Givhans Ferry
Moderate flooding continues on the Edisto River near Givhans Ferry. It is expected to crest just shy of major flood stage tomorrow evening before slowly falling over the next several days — though the river is going to remain in moderate flood for the foreseeable future.
Unfortunately, the swollen Edisto is causing significant issues, including entering peoples’ homes.
Santee River near Jamestown
The Santee River at Jamestown crested on Monday at 13.06' and continues its descent. The NWS forecast calls for it to drop below flood stage on Thursday.
The next seven days
One word: Glorious.